Equalizing current in the windings of 2G HTS transformer with parallel tapes transposed with clusters of transpositioners

The construction cost of the HTS transformer windings is more than half of the total transformer cost, which determines the low interest of the energy sector. Previous experience of the authors in the design and construction of physical models of superconducting electric devices (electromagnets, transformers, fault current limiter) indicates that the equalization of the transformer windings reactance, in parallel connected tapes, can be made for all coils in the appropriate "transpositioners" to give effect similar as in the Roebel cable (CTC-Continuously Transposed Cable).